Since no one has answered your question, I'll tell you what I do, though definitely I'm not an expert. I'm in a similar climate zone as you and so garden year round. I am an organic gardener, so rotation is perhaps more important to me than to someone who uses chemicals. I have never left any space fallow and haven't had a problem. My rules are pretty simple. For example, I don't plant tomatoes, potatoes, eggplants, and peppers together. They form one group. I don't plant any of those in the same place as each other for 3 years. So, for example, if I had tomatoes in the summer, I don't put potatoes in tht same space in the following winter or for 2 more years. In the same way I group- (peas and beans,) (carrots, parsley, and root crops in general.) (winter squash, summer squash, cucumber, melons) (onions, garlic, and leeks)(brocolli, cauliflower, cabbage, but not lettuce) A lot of the literature says you should leave 2 years for some plants and 4 years for others, but I can't keep up with anything so complicated. I just do 3 years for everything. For crop rotation to work well you have to keep good records from year to year. I write everything down in a notebook as I plant it. I also note down any problems I have throughout the season, seeds that fail to germinate, diseases, insect infestations, etc. I do square foot gardening which makes it a bit easier because I have my squares numbered, but you can do the same with rows.
Hope this helps.

Saw the following page recently and thought of your question. A rotation schedule is down the page half way or so.

Here is a link that might be useful: Synergistic Garden rotation